Job Description

Overview

Rocket Lab is an end-to-end space company focused on building rockets, spacecraft, and critical subsystems for various missions. The Mechanical Engineer II role involves developing mechanical and electromechanical hardware for space robotics and related applications.

Responsibilities

  • Develop precision mechanisms, robotic systems, electromechanical assemblies, tooling, fixtures, and ground support equipment for spaceflight and ground applications.
  • Translate program, system, production, and test needs into practical mechanical architectures, interfaces, packaging concepts, and verification approaches.
  • Develop mechanical hardware through concept development, trade studies, detailed design, analysis, drawing release, procurement, assembly, integration, environmental test, qualification, and delivery.
  • Design space mechanisms and motion systems including actuators, gimbals, gear trains, harmonic drives, bearings, motors, rotary sensors, springs, launch locks, release devices, and kinematic or pseudo-kinematic interfaces.
  • Create and maintain product definition in SolidWorks, including 3D CAD models, production drawings, interface details, bills of material, assembly documentation, test procedures, and supporting design analyses.
  • Apply GD&T, tolerance stack-up analysis, material and process selection, first-principles calculations, and finite element analysis to make sound design decisions.
  • Design hardware for stiffness, strength, thermal environments, vibration and shock, tolerance control, manufacturability, inspectability, assembly, integration, and test.
  • Work closely with electrical, software, systems, manufacturing, quality, supply chain, and test teams to evaluate alternatives and deliver practical, build-ready solutions.
  • Support hardware assembly, integration, troubleshooting, inspection, environmental testing, qualification testing, fixture development, and review of test data.
  • Coordinate with machine shops and suppliers to resolve fabrication questions, evaluate manufacturing approaches, and support timely hardware delivery.
  • Document technical decisions, design analyses, test results, risks, and verification evidence in support of program milestones and design reviews.

Requirements

  • Bachelor's degree in mechanical engineering, aerospace engineering, mechatronics, robotics, or another related engineering discipline.
  • 2+ years of professional mechanical engineering experience.
  • Experience designing mechanical hardware, mechanisms, aerospace hardware, robotic systems, or electromechanical assemblies.
  • Experience with SolidWorks or a comparable CAD platform, including 3D modeling and production drawing creation.
  • Working knowledge of GD&T, tolerance analysis, material selection, manufacturing processes, and mechanical design documentation.
  • Ability to use engineering fundamentals, hand calculations, and analysis tools to support design decisions.
  • Hands-on experience supporting hardware build, integration, troubleshooting, inspection, or testing.
  • Ability to work effectively with cross-functional engineering, manufacturing, quality, supply chain, and test teams.

Benefits

  • 401k
  • Health Insurance
  • Dental
  • Vision
  • PTO

Additional Information

  • Based onsite at Rocket Lab Robotics in Pasadena, California.
  • This position may require prolonged periods of sitting, standing, walking, computer work, and occasional exposure to moderate levels of noise, dust, and fumes in production areas.

Benefits

401k
Health Insurance
Dental
Vision
PTO

How this job compares in Pasadena, CA

Pay in context

At roughly $54/hr, this posting sits about 65% above the $33/hr median for welding jobs across California — toward the top of a $27–$41/hr middle band drawn from 470 postings with published pay. Put another way, it pays more than about 85% of the comparable postings we have wage data for. Pay that far above local median usually comes attached to something: a harder cert requirement, travel, night shift, or overtime that isn't really optional. Worth establishing which before you accept.

The local market in Pasadena, CA

Pasadena, CA is a small market in our index: 2 other active welding openings alongside this one, from 2 employers. Across California as a whole we're tracking 596 other active welding openings from 294 employers. With this few local postings, most welders here end up either commuting or looking at travel work. Browse welding jobs across California.

Rocket Lab currently has 4 other openings live in California, which is usually a sign of either steady growth or steady turnover — worth asking which in the interview.

The most active employers in California at the moment, by number of open welding reqs, are SpaceX (34), Aerotek (16), and Volt (16). Volume like that usually means either a genuine expansion or a staffing agency working several client sites — worth knowing which before you apply.

Within California, the best-paying metros we track by median hourly rate are Redondo Beach at $65/hr, Long Beach at $49/hr, and Santa Ana at $48/hr. If you can relocate or commute, that spread is worth factoring in.

Similar openings near Pasadena, CA

Pay figures are medians computed from live postings in the Welding Pros index, not from survey data, and they move as employers post. Mechanical Engineer II figures were last recalculated when this page was built.